Question: What is the shape of velocity, time graph for constant acceleration ?

• 1. straight inclined line.
• 2. parabola
• 3. inclined curve
• 4. declined curve

Question: Which shows the correct relation between time of flight T and maximum height H ?

• 1. H=gT2/8
• 2. H=8T2/g
• 3. H=8g/T2
• 4. H=gT2

Question: Taking off rocket can be explained by __________________?

• 1. 1st law of motion
• 2. 2nd law of motion
• 3. Law of conservation of momentum
• 4. law of conservation of energy

Question: What is the angle of projection for which the range and maximum height become equal ?

• 1. tan-1 ¼
• 2. tan-1 4
• 3. tan-1 ½
• 4. tan-1 2

Question: Distance covered by a freely falling body in 2 seconds will be__________________?

• 1. 4.9 m
• 2. 19.6 m
• 3. 39.2 m
• 4. 44.1 m

Question: Flight of a rocket in the space is an example of______________________?

• 1. second law of motion
• 2. third law of motion
• 3. first law of motion
• 4. law of gravitation

Question: At which angle the range of the projectile is maximum____________________?

• 1. 45
• 2. 60
• 3. 30
• 4. none

Question: Time rate of change of momentum is equal to____________________?

• 1. force
• 2. impulse
• 3. velocity
• 4. both A and C

Question: Why Ballistic missile fails in some circumstances of precision ?

• 1. due to their shape
• 2. due to air resistance
• 3. due to angle of projection
• 4. all of these

Question: A body is moving with uniform velocity. Its______________________?

• 1. speed changes
• 2. acceleration changes
• 3. direction of motion changes
• 4. displacement from origin changes